Ulalek, Fused Atrocity + Glaring Fleshraker + Echoes of Eternity

Ulalek, Fused Atrocity

Glaring Fleshraker

Echoes of Eternity

How it works

1. Cast any colorless Eldrazi spell by paying its mana cost, triggering Ulalek twice, Echoes of Eternity twice and Glaring Fleshraker's first ability twice.
2. Resolve a Ulalek trigger, causing you to pay CC to copy the colorless spell, the remaining Ulalek trigger, both Echoes of Eternity triggers and both Glaring Fleshraker triggers.
3. Resolve the first Glaring Fleshraker trigger, creating a 0/1 Eldrazi Spawn creature token.
4. When the Eldrazi Spawn enters the battlefield, Glaring Fleshraker's second ability triggers, dealing 1 damage to each opponent.
5. Activate the Eldrazi Spawn by sacrificing it, adding C.
6. Repeat from step 3 one additional time.
7. Repeat from step 2.